In a certain class, the ratio of girls to boys was 5 to 4. If there are 80 boys in the class, how many students are there in all?

The dinner bill came to $64.99. What will the final cost be with 6% sales tax and a 20% tip

The velocity of sound in air is given by the equation v = 20 √273 + where v is the velocity in meters per second and t is the temperature in degrees Celsius. Find the temperature when the velocity of sound in air is 369 meters per second.

Write an expression to represent multiplying the sum of 8 and 2 by 6.

Mr. cerna has 2/5 of a bag of candy and he is going to share it with 3 other people. How much candy will each person get.

maddie is reading a book with 300 pages. she has read 126 pages so far. how many pages does Maddie have left to read

Fran has a poster that measures 3/4 square yard in area the length of the poster is 1/3 yard what is the width of the poster

Which is a better deal? 2 12 oz. bag of chips for $3.40 or a 3 oz. bag for $0.75?

Which statements about the system are true? Check all that apply. y = x - 4 3y - x = - 7 The system has one solution. The system consists of parallel lines. Both lines have the same slope. Both lines have the same y-intercept.

Trever is a salesperson who is paid a monthly salary of $500 plus a 2% commission on sales. the i come base on x sales (in dollars) is

What is the approximate surface area of the sphere 16yd?